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POWER ELECTRONIC DEVICE ASSEMBLY FOR PREVENTING PARASITIC SWITCHING-ON OF FEEDER CIRCUIT-BREAKER

  • US 20160380625A1
  • Filed: 06/29/2016
  • Published: 12/29/2016
  • Est. Priority Date: 06/29/2015
  • Status: Active Grant
First Claim
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1. A power electronic device assembly for preventing parasitic switching-on of a feeder circuit breaker, comprising:

  • a logic circuit;

    a power switch including a control terminal as an input of the power switch and a reference leg;

    a driver circuit disposed between the logic circuit and the power switch configured to drive the power switch, the driver circuit including a drive unit and a short circuit having a safety function, wherein when the input of the power switch is not in operation, the short circuit short-circuits the power switch using the reference leg of the power switch so a potential of the input decreases below a switching-on threshold value of the power switch; and

    a wire connection device disposed between the driver circuit and the power switch, wherein the wire connection device is configured such that when a supply voltage for the driver circuit or the short circuit is not applied thereto or is lower than a predetermined value, the input of the power switch is short-circuited by the reference leg of the power switch or is coupled to a safety potential at which discharge is secured, whereby discharge of a parasitic charge current generated on the input of the power switch is secured.

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